ΔE 14.5, fair: the same colour family, but not a straight swap. Elysian Green is noticeably lighter, more saturated, cooler than Drab Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Elysian Green is noticeably lighter, more saturated, cooler than Drab Green.
The same difference applies the other way round: Drab Green is noticeably darker, more muted, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Drab Green on the colour wheel See Elysian Green on the colour wheel
All matches: Drab Green equivalents · Elysian Green equivalents